Improvement in machines for coiling wire



l. G. SMITH.

Machines far fioiling wire.

N0.153,38.7, Patentedluly 21,1874.

QfiE GRAPHIC -CO.PHOTO-13TH.398-44 PARK PLACE,N-Y-

UNITED STATES JOHN G. SMITH, OF ST. LOUIS, MISSOURI.

IMPROVEMENT IN MACHINES FOR COILING WIRE.

Specification forming part of Letters Patent No. 153,387, dated July 21,i874 application filed May 26, 1874.

CASE B.

To all whom it may concern:

Be it known that I, JOHN G. SMITH, of St. Louis, St. Louis county,Missouri, have invented a certain new and useful Improvement in Machinesfor Coiling Wire, of which the following is a specification:

The first part of my improvement consists in combining, with the mandrelon which the wire is coiled, two or moreconcave-faeed rolls,circumferentially grooved and placed obliquely to the mandrel, so thateach groove will be in the direction of that portion of the wire coillying within it.

The second part of my invention consists in forming the ends of theroll-shafts with balland-socket bearings, so as to allow of theiradjustment to and from the mandrel by moving one end of the shafts inarcs concentric with the axial line of the mandrel.

The third part of my invention consists in the provision of anadjustable turn-plate, on which the roller-shafts have journal-bearingat one end, so that by turning the said plate the rolls have distanceadjustment with the mandrel.

In the drawings, Figure 1 is a top view, with part of the front standardand turnable journal-plates broken away, to show the tubular pivot-lugof the plate in axial section. Fig. 2 is a transverse section at line 00a, Fig. 1. Fig. 3 is a top view of the grooved rolls and mandrel,enlarged to full size. Fig. 4 is a top view of a modification reduced.

A is the head-stock, having a rear standard, B, and a front standard, 0.D D are the'rear boxes of the roll-shafts E F. These boxes are attachedto the rear standards, and have journalsoekets of a globular form attheir inner ends, giving a bearin g to theball-formed ends 0 of theshafts E F. This balland -socket bearin g is for the purpose of'allowingthe adjustment of the rolls G and H in relation to the mandrel Ibymovementof the front ends of the shafts in the arcs of a circleconcentric with a line axial to the mandrel, the roll G being below andthe roll H above the mandrel. The front end f of the shafts have similar(globular) form to the ends 0, and rest in similar sockets in the boxesJ K. These boxes are attached to a plate, L, having a central tubularlug, t, turnable in a bearing in the front standard 0, to adjust therolls to the mandrel, as aforesaid. Upon the rear side of the standard 0is a lug, M, through which screws a set-screw, N, whose point rests uponthe top of the journal-plate L, at one side, so that by turning thescrew downward the rolls are made to approach nearer to the mandrel. Theset-screw has a jam-nut, O, to fix it to its adjustment. The mandrel Iturns in a front bearing, 1?, and has a center heel-screw, Q, 011 whichits rear end has bearing. R is a pulley carrying the driving-belt. S isa spur-pinion upon the mandrel, engaging with the two spur-wheels T Uupon the shafts E F, and by which said shafts are driven with the samesurface speed (about) as the mandrel, receiving motion from the mandrel.The rolls G H have a greater diameter at the ends than at the middle, asshown, so that the surfaces of the rolls are equidistant from themandrel about their whole length. The rolls G and H have roundedcircumferential grooves, in which the coil of wire upon the mandrellies. The roll G has four grooves, g g g g, and that H three grooves, hh 71. These grooves may be more or less in number, but I have found thenumber as above to answer the purpose with good satisfaction. V is abracket carrying two grooved rollers, NV and Y, between which the wirepasses as it is drawn forward by the rotation of the mandrel and rolls.The wire is guided by the rollers W andY, and from them extends to thegroove 9, in which it crosses the top of the roll G and around under themandrel to the groove h,- then around over the mandrel to the groove 9and is thus coiled round and round the mandrel in a spiral lying in thegrooves h g h g in the order named, and being carried forward to thepoint of the mandrel, from which it passes through the tubular lug t,(on which the plate L may be turned for adjustment, as beforedescribed.)

In the modification shown in-Fig. 4, the number of grooves h g, 820., isdoubled, so as to carry through two wires simultaneously;

PATENT OFFICE.

and I have found this modification to answer well in practice, the twospirals being coiled simultaneously in the side of the webbing as with asingle coil.

I have also used with satisfactory results three oblique rollssurrounding the mandrel, and each having a single wire-groove.

I claim as my invention- 1. The combination of the mandrel I and rolls GH, each roll being provided with one or more grooves and set obliquelyto the man- JOHN G. SMITH.

Witnesses:

S. M. SMITH, ROBERT BURNS.

